Product Description:

The KDA 3.2-150-3-A0D-U1 is a spindle drive manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. It converts the shared DC bus energy of an Indramat supply module into three-phase power that governs the speed and torque of machine-tool spindles, supporting turning, milling, and drilling axes inside automated cells. As a Series 3, Version 2 unit, it integrates with Indramat controller racks and delivers closed-loop regulation that keeps the cutting process within programmed velocity profiles.

The power stage is fed by a DC link rated at 300 VDC, enabling the converter to supply up to 150 A of continuous motor current. Thermal management relies on an auxiliary blower line of 115 V/50–60 Hz; this feeder energizes a dedicated fan that directs airflow through a mounted heatsink blower assembly. The cooling arrangement is categorized as forced cooling, ensuring that switching devices remain within safe junction temperatures during high-speed operation. With active cooling in place, the drive sustains full output across its load range, and the absence of a second encoder input simplifies feedback wiring to a single resolver or TTL channel.

Site limits stipulate ambient operation between 5 to 45 °C and installation heights not exceeding 1000 m above sea level. Command interfacing is straightforward: spindle velocity is set through an analog speed command value, while contouring systems can inject a separate digital position command value for synchronized motion. These dual reference paths let CNC or PLC hardware coordinate acceleration ramps and positional holds without extra conditioning hardware. By combining defined environmental tolerances with clear control channels, the KDA drive streamlines cabinet layout and reduces commissioning time in production machining lines.